package com.itheima.web;

import com.itheima.pojo.User;
import com.itheima.service.UserService;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet("/registerServlet")
public class RegisterServlet extends HttpServlet {
    private UserService service = new UserService();

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // 1.获取用户名和密码数据
        String username = request.getParameter("username");
        String password = request.getParameter("password");

        User user = new User();
        user.setUsername(username);
        user.setPassword(password);

        // 获取用户输入的验证码
        String checkCode = request.getParameter("checkCode");

        // 从Session获取程序生成的验证码
        HttpSession session = request.getSession();
        String checkCodeGen = (String) session.getAttribute("checkCodeGen");

        // 比对
        if(!checkCode.equalsIgnoreCase(checkCodeGen)){
            request.setAttribute("register_msg","验证码错误");
            request.getRequestDispatcher("/register.jsp").forward(request, response);

            // 不一样，不允许注册
            return;
        }

        // 2.调用service注册
        boolean flag = service.register(user);
        // 3.判断注册成功与否
        if (flag) {
            // 注册成功，跳转登录页面
            request.setAttribute("register_msg","注册成功，请登录");
            request.getRequestDispatcher("/login.jsp").forward(request, response);
        }else {
            // 注册失败，跳转到注册页面
            request.setAttribute("register_msg","用户名已存在");
            request.getRequestDispatcher("/register.jsp").forward(request, response);

        }

    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }
}
